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ES8609767A1 - Electrical system having variable-frequency clock. - Google Patents

Electrical system having variable-frequency clock.

Info

Publication number
ES8609767A1
ES8609767A1 ES544493A ES544493A ES8609767A1 ES 8609767 A1 ES8609767 A1 ES 8609767A1 ES 544493 A ES544493 A ES 544493A ES 544493 A ES544493 A ES 544493A ES 8609767 A1 ES8609767 A1 ES 8609767A1
Authority
ES
Spain
Prior art keywords
variable
microprocessor
electrical system
frequency clock
frequency
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES544493A
Other languages
Spanish (es)
Other versions
ES544493A0 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
American Telephone and Telegraph Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by American Telephone and Telegraph Co Inc filed Critical American Telephone and Telegraph Co Inc
Publication of ES8609767A1 publication Critical patent/ES8609767A1/en
Publication of ES544493A0 publication Critical patent/ES544493A0/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3234—Power saving characterised by the action undertaken
    • G06F1/324—Power saving characterised by the action undertaken by lowering clock frequency
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/04—Generating or distributing clock signals or signals derived directly therefrom
    • G06F1/08—Clock generators with changeable or programmable clock frequency
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Power Sources (AREA)
  • Microcomputers (AREA)

Abstract

The microprocessor unit of a system implemented using metal-oxide-silicon (MOS) technology, is driven by a variable-frequency clock. The microprocessor controls the clock frequency based on the present rate of required microprocessor activity. By driving the microprocessor unit at a lower clock frequency when such activity rate is low, the energy dissipated by the microprocessor unit is reduced due to the MOS power-frequency characteristic.
ES544493A 1984-06-25 1985-06-24 Electrical system having variable-frequency clock. Expired ES8609767A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/624,469 US4670837A (en) 1984-06-25 1984-06-25 Electrical system having variable-frequency clock

Publications (2)

Publication Number Publication Date
ES8609767A1 true ES8609767A1 (en) 1986-09-16
ES544493A0 ES544493A0 (en) 1986-09-16

Family

ID=24502136

Family Applications (1)

Application Number Title Priority Date Filing Date
ES544493A Expired ES8609767A1 (en) 1984-06-25 1985-06-24 Electrical system having variable-frequency clock.

Country Status (6)

Country Link
US (1) US4670837A (en)
EP (1) EP0183726A1 (en)
JP (1) JPS61502567A (en)
CA (1) CA1229929A (en)
ES (1) ES8609767A1 (en)
WO (1) WO1986000432A1 (en)

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US5179693A (en) * 1985-03-29 1993-01-12 Fujitsu Limited System for controlling operation of processor by adjusting duty cycle of performance control pulse based upon target performance value
GB2196450B (en) * 1986-10-20 1991-02-13 Mars Inc Data-storing tokens
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US5025387A (en) * 1988-09-06 1991-06-18 Motorola, Inc. Power saving arrangement for a clocked digital circuit
US4980836A (en) * 1988-10-14 1990-12-25 Compaq Computer Corporation Apparatus for reducing computer system power consumption
GB2228598A (en) * 1989-02-28 1990-08-29 Ibm Clock signal generator for a data processing system
US5123107A (en) * 1989-06-20 1992-06-16 Mensch Jr William D Topography of CMOS microcomputer integrated circuit chip including core processor and memory, priority, and I/O interface circuitry coupled thereto
US5142684A (en) * 1989-06-23 1992-08-25 Hand Held Products, Inc. Power conservation in microprocessor controlled devices
US5440749A (en) * 1989-08-03 1995-08-08 Nanotronics Corporation High performance, low cost microprocessor architecture
US6158012A (en) * 1989-10-30 2000-12-05 Texas Instruments Incorporated Real-time power conservation and thermal management for computers
US5218704A (en) * 1989-10-30 1993-06-08 Texas Instruments Real-time power conservation for portable computers
JP2762670B2 (en) * 1990-03-30 1998-06-04 松下電器産業株式会社 Data processing device
JPH04257010A (en) * 1991-02-08 1992-09-11 Nec Corp System clock switching mechanism
US5189314A (en) * 1991-09-04 1993-02-23 International Business Machines Corporation Variable chip-clocking mechanism
WO1993006543A1 (en) * 1991-09-27 1993-04-01 Kabushiki Kaisha Toshiba Portable computer having function of switching over cpu clock
EP0617812B1 (en) * 1991-12-17 1998-03-04 Compaq Computer Corporation Apparatus for reducing computer system power consumption
US5452401A (en) * 1992-03-31 1995-09-19 Seiko Epson Corporation Selective power-down for high performance CPU/system
US7216064B1 (en) 1993-09-21 2007-05-08 Intel Corporation Method and apparatus for programmable thermal sensor for an integrated circuit
US6865684B2 (en) * 1993-12-13 2005-03-08 Hewlett-Packard Development Company, L.P. Utilization-based power management of a clocked device
GB2287555A (en) * 1994-02-25 1995-09-20 Motorola Gmbh An adjustable clock generator system.
US5798667A (en) * 1994-05-16 1998-08-25 At&T Global Information Solutions Company Method and apparatus for regulation of power dissipation
JP3467631B2 (en) * 1994-06-07 2003-11-17 株式会社ルネサステクノロジ Logic LSI
US5752011A (en) 1994-06-20 1998-05-12 Thomas; C. Douglas Method and system for controlling a processor's clock frequency in accordance with the processor's temperature
US7167993B1 (en) 1994-06-20 2007-01-23 Thomas C Douglass Thermal and power management for computer systems
US5754436A (en) * 1994-12-22 1998-05-19 Texas Instruments Incorporated Adaptive power management processes, circuits and systems
DE19505990C2 (en) * 1995-02-21 2002-03-28 United Microelectronics Corp Method and device for reducing the energy consumption of a computer during data entry
US5680594A (en) * 1995-05-24 1997-10-21 Eastman Kodak Company Asic bus interface having a master state machine and a plurality of synchronizing state machines for controlling subsystems operating at different clock frequencies
JPH0934867A (en) * 1995-07-24 1997-02-07 Mitsubishi Electric Corp Microcomputer
US5758133A (en) * 1995-12-28 1998-05-26 Vlsi Technology, Inc. System and method for altering bus speed based on bus utilization
DE19610627A1 (en) * 1996-03-19 1997-09-25 Bosch Gmbh Robert Microcontroller with self-alarm device
US6691236B1 (en) 1996-06-03 2004-02-10 Hewlett-Packard Development Company, L.P. System for altering operation of a graphics subsystem during run-time to conserve power upon detecting a low power condition or lower battery charge exists
US6321335B1 (en) 1998-10-30 2001-11-20 Acqis Technology, Inc. Password protected modular computer method and device
US6643777B1 (en) 1999-05-14 2003-11-04 Acquis Technology, Inc. Data security method and device for computer modules
US6718415B1 (en) 1999-05-14 2004-04-06 Acqis Technology, Inc. Computer system and method including console housing multiple computer modules having independent processing units, mass storage devices, and graphics controllers
US6715089B2 (en) * 2001-01-22 2004-03-30 Ati International Srl Reducing power consumption by estimating engine load and reducing engine clock speed
KR100429880B1 (en) * 2001-09-25 2004-05-03 삼성전자주식회사 Circuit and method for controlling LCD frame ratio and LCD system having the same
US7111179B1 (en) 2001-10-11 2006-09-19 In-Hand Electronics, Inc. Method and apparatus for optimizing performance and battery life of electronic devices based on system and application parameters
DE10340393A1 (en) * 2003-09-02 2005-04-07 Micro-Star International Co., Ltd., Jung He Dynamic clock pulse adjusting device for detecting real time work conditions of CPU, has clock pulse generator to adjust its output clock pulse in accordance with signal received from logic circuit
DE10344004A1 (en) * 2003-09-23 2005-04-14 Robert Bosch Gmbh Method and device for generating an internal time base for a diagnostic function for a power amplifier module
US7392099B2 (en) * 2003-12-12 2008-06-24 Hewlett-Packard Development Company, L.P. System and method for power management when an operating voltage is between two thresholds
US20060136764A1 (en) * 2004-12-22 2006-06-22 Munguia Peter R Methods and apparatus to manage power consumption of a system
US7882380B2 (en) * 2006-04-20 2011-02-01 Nvidia Corporation Work based clock management for display sub-system
US7937606B1 (en) 2006-05-18 2011-05-03 Nvidia Corporation Shadow unit for shadowing circuit status
DE102006046184B4 (en) * 2006-09-29 2009-01-02 Infineon Technologies Ag A method, apparatus and computer program product for determining an anticipated exceedance of a maximum allowable power consumption of a mobile electronic device and mobile electronic device
US7990724B2 (en) 2006-12-19 2011-08-02 Juhasz Paul R Mobile motherboard
US7783906B2 (en) * 2007-02-15 2010-08-24 International Business Machines Corporation Maximum power usage setting for computing device
US9268386B2 (en) * 2009-01-09 2016-02-23 Qualcomm Incorporated Methods and systems for dynamic service flow using available battery power
US8700926B2 (en) * 2010-01-11 2014-04-15 Qualcomm Incorporated System and method of tuning a dynamic clock and voltage switching algorithm based on workload requests
CN102819313B (en) * 2012-07-17 2015-05-06 腾讯科技（深圳）有限公司 Operating method of terminal equipment and terminal equipment

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US3453601A (en) * 1966-10-18 1969-07-01 Philco Ford Corp Two speed arithmetic calculator
US3656123A (en) * 1970-04-16 1972-04-11 Ibm Microprogrammed processor with variable basic machine cycle lengths
US3775696A (en) * 1971-11-18 1973-11-27 Texas Instruments Inc Synchronous digital system having a multispeed logic clock oscillator
DE2248170A1 (en) * 1972-09-30 1974-04-04 Fritz Dr-Ing Gliem PROCEDURE FOR BETTER USE OF ELECTRONIC DIGITAL COMPUTERS WITH LIMITED ELECTRICAL POWER
US3922526A (en) * 1973-02-02 1975-11-25 Texas Instruments Inc Driver means for lsi calculator to reduce power consumption
US4037090A (en) * 1974-11-19 1977-07-19 Texas Instruments Incorporated Multiphase clocking for MOS
US4241418A (en) * 1977-11-23 1980-12-23 Honeywell Information Systems Inc. Clock system having a dynamically selectable clock period
US4191998A (en) * 1978-03-29 1980-03-04 Honeywell Inc. Variable symmetry multiphase clock generator
US4463440A (en) * 1980-04-15 1984-07-31 Sharp Kabushiki Kaisha System clock generator in integrated circuit
US4331924A (en) * 1980-05-19 1982-05-25 Elliott Kenneth D Pulse rate multiplying circuitry
US4414637A (en) * 1981-01-13 1983-11-08 Honeywell Information Systems Inc. Adjustable clock system having a dynamically selectable clock period
US4447870A (en) * 1981-04-03 1984-05-08 Honeywell Information Systems Inc. Apparatus for setting the basic clock timing in a data processing system
US4438490A (en) * 1981-10-01 1984-03-20 Honeywell Information Systems Inc. Clock control of a central processing unit from a monitor interface unit
NL8202685A (en) * 1982-07-05 1984-02-01 Philips Nv CLOCK SIGNAL REGENATOR WITH HIGH STABILITY.

Also Published As

Publication number Publication date
EP0183726A1 (en) 1986-06-11
US4670837A (en) 1987-06-02
WO1986000432A1 (en) 1986-01-16
JPS61502567A (en) 1986-11-06
CA1229929A (en) 1987-12-01
ES544493A0 (en) 1986-09-16

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